Sams Teach Yourself C++ in 21 Days

Advanced Inheritance 559

16

240: return;

241: }

242:

243: // if this goes after this one and before the next

244: // then insert it here, otherwise get the next

245: pNext = pCurrent->GetNext();

246: Next = pNext->GetPart()->GetPartNumber();

247: if (Next > New)

248: {

249: pCurrent->SetNext(pNode);

250: pNode->SetNext(pNext);

251: return;

252: }

253: pCurrent = pNext;

254: }

255: }

256:

257: class PartsCatalog

258: {

259: public:

260: void Insert(Part *);

261: int Exists(int PartNumber);

262: Part * Get(int PartNumber);

263: operator+(const PartsCatalog &);

264: void ShowAll() { thePartsList.Iterate(Part::Display); }

265: private:

266: PartsList thePartsList;

267: };

268:

269: void PartsCatalog::Insert(Part * newPart)

270: {

271: int partNumber = newPart->GetPartNumber();

272: int offset;

273:

274: if (!thePartsList.Find(offset, partNumber))

275: {

276: thePartsList.Insert(newPart);

277: }

278: else

279: {

280: cout << partNumber << “ was the “;

281: switch (offset)

282: {

283: case 0: cout << “first “; break;

284: case 1: cout << “second “; break;

285: case 2: cout << “third “; break;

286: default: cout << offset+1 << “th “;

287: }

288: cout << “entry. Rejected!” << endl;

289: }

290: }

291:

LISTING16.5 continued